Prince? I too would have though a Prince would be the "most expensive" Nissan vehicle on the used car market. It looks like a the car in the ad is a newer model than the first Datson:


This one apparently takes on the new spelling.

The eBay ad is big on "mass production" history of Japan, but gives almost no info about the actual car for sale! Just some very grainy pictures taken at some unspecified time.

Prior to the Graham-Paige machinery, state of the art machinery was brought over by Mitsubishi Trading under contract to Nissan. The Graham-Paige deal was for designs and machinery and happened because GP was in financial trouble. The vehicle that resulted was not the car in the auction, but a cabover truck, based on GP designs. However, 1937 is generally considered the year state-of-the-art mass production of cars came to Japan. All because of Nissan.

Trivia: In 1937, Ford built 2,800 Nissan trucks, because the assembly lines weren't going quite as well as Nissan had hoped, they had to farm it out.

Nissan got big on trucks, because that's where the market was. Cars were a niche market in Japan at that time.